Matter & Mixtures
Which of the following is an element?
a) Nitrogen
b) Water
Nitrogen
Liquids have a ______ shape and ______ volume.
Indefinite shape, definite volume
What type of bond is in MgO?
Ionic
Why does orange juice with pulp need to be shaken?
Because it is a suspension
What type of radiation is blocked by paper?
Alpha particles
Which of the following is a mixture?
a) Gold
b) Air
Air
When a solid sublimes to a gas, what kind of change is this?
Physical change
Name NaOH.
Sodium hydroxide
What property makes water a good solvent?
It is polar with partial positive and negative charges
Which particle has no charge?
Neutron
Which of the following is a compound?
a) Sugar (sucrose)
b) Air
Sugar (sucrose)
Cutting an iron rod in half changes which property?
Physical property only
What type of bond forms when electrons are shared?
Covalent
What happens when a solution becomes saturated?
No more solute can dissolve; extra settles at bottom
Which process changes one element into another?
Radioactive decay
Which of the following is a heterogeneous mixture?
a) air
b) pizza
PIZZZZZAAAAA!!!!
Flammability is a ________ property
Chemical
What law states that mass is conserved in a reaction?
Law of Conservation of Mass
What does “solubility” mean?
The maximum amount of solute that can dissolve in a solvent
Which type of radiation has the greatest penetration?
Gamma rays
Distilled water is what type of substance?
a) Element
b) Compound
Compound
Rusting of iron is what kind of change?
Chemical Change
What kind of reaction releases heat energy?
Exothermic reaction
Where does nuclear fusion naturally occur?
In the Sun and other stars